Glass-annealing furnace.



B. F. MORTON. GLASS ANNEALING FURNACE.

APPLlCATlON HLED SE?T. 13 1918.

Patented Feb. 25, 1919.

3 SHEETS SHEEI cm a I 1 4 WON E B. F. MORTON. mas ANNEAUNG FURNACE. APPLICATQN FILED SEPT- \3. H8- 7 Patented heh. 2;), 1919.

3 SHEETS SHEEI 2.

WITNESSES 1 N'O'Q wa clf woy I 1 B. F. MORTON GLASS ANNEALING FURNACE. APPUCATWN rmwscn. :3. 191a.

INVENTOR UNITED STATES PATENT OFFICE.

BENJAMIN FRANKLIN MORTON,

I-IO BOKEN, PENNSYLVANIA.

Specification of Letters Patent.

Patented r ewaomiewl l Application filed September 13, 1818. Serial No; 253,948.

exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a longitudinal section through one form of my improved furnace.

Fig. 2 is a sectional view on the line IIII of Fig. 1.

Fig. 3 is a similar view on the line III-III of Fig. 1.

Fi 4 is an irre lar sectional view on the line IV-IV of lg. 1, and

Fig. 5 is a perspective view of a portion of one of the compound muflle roof arches.

This invention relates to an improvement in annealing furnaces, and. more particularly to furnaces of the muiile type for anhealing glassware. v

The obJBct of my invention is to. provide a furnace of this character in whichglass-- were is annealed in a mufile withinthe coinbustion chamber out of contact with the gases used for heating the furnace, and is designed to provide a cheap and eilicient structure of this character, in which the mufile is so constructed that there will be no leakage of gases from the combustion chamber into the mufile; and in which the mullle is supported by two sets of arches within the combustion chamber. Another object of my invention is to provide metallic supports for the roof of the muffle as well as the roof of the combustion chamber, which may be used in cases of very large structures.

The precise nature of my invention ,will be best understood by reference to the) co'mpanying drawings, which will now described, it being premised, however various changes may be made hi the detilils i of construction and general arranfimnitiniei 1 1e spirit and scope of my invention as defihed in the appended claims.

the parts, without departing from In the drawings, the reference chat-'1 3 designates the side walls ofsthe fu'fr ui nd the. air ducthig.

, The front enrich;

I'ih accordance with the i'equiremen with air, inletsji, ahd (3 is a igazs iduct between a; which'is' sepa ted lthglffi i from by mean j of the longitudinal walls 7.- i

nieation with a as flue 8 hggme'ans f a port 9U ligich isycontrolled ya va ve 0. The 'heges duct 6 are formed of tiles 11, whidh ajre supported on portions of the side wallfi' Q aiid the longitud inal walls 7, and whio tiles also form the bottom of the rombustion chamber 12.

.13 are openings in the tilcsl l-l through which the anflows into the combustion chamber 12, and 14 are similar opciiingthrough the and air ducts on the other-sides of .the

nac'e,but it will readily be understood that these may be placed in any desired rnanner, tsof the furnace. Supported on on each side thereof, area plurality of vertical piers 15, whiclnfoi'il'r ,abu tments for arches 16. These arches 16 forth the su oombfistion i i as 17 and the arches 16' are th s 19 of the muflle, and 20*is theeifur; 90

nace or combustion-;cha=m .1 The roof of the Inufiie is m rality of T-shaped tiles 21 w h support tiles 22. The tiles thereof of the1muflle"18;" shaped tiles, the flanges-of 1y thelegs of the T-shaped tilel: ggetherfform composite arches f the roof "of the Fmuflle. The V fedchof these arches rest agai "5 ends ,of the piers 15 which to yfiii tlie iarches. By suppw-t' I the arch forming gas if t joints are f 56 the muille an i bet-.5!

re longitudinal iialls su ported on MWM l l) the gas d .is'in cominu- 60 the portion of the wa'llj- 2 and within the conibiistiorrlchainbcr hereof 20 of the furnace, ,j o I J we'ii 'these walls is a line fi fll e"l lll 3 the usual buckstays oneach side. p for retaining the side walls in positic%i 4, i: vereof being supported 0 S at" 1S 1 ni 4 are air ducts on each side of the str re, the furnace; Commun ca in the bottom thereof, which. are pr 'ed'f 's, ue- 26 is an oil'takc flubeg'le h thereto may be regulated by means of a damper 28. lhe combustion chamber at the side of the muflie and the top thereof is divided into a plurality of secondary combustion chambers 29, each of which is in communication with the main combustion chamber by means of ports 30 and 31 at the lower end thereof, while the central upper portion of each of these secondary chambers is in communication with the flue 26 by means of a port 32.

These ports 32 may be entire] or partially closed by means of movab e tiles or danipers 32 which extend through one of the walls 24, so that the temperature in the different portions of the muffle may be readily regulated.

In the drawings I have shown the portions of the buck-stays 3 connected to each other by means of cross members 33 which are conn cted thereto by means of angle irons 34 and which cross members also form supports for the ofi'take flue 27 These members 33 also form supports for longitudinal channel members 35, to which are connected the ends of rods 36. These rods 36 extend downwardly through the roof 20 and the tiles 21 and 23 of the arches, and have heads 37 on the lower end thereof for forming auxiliary supports for the arches. These auxiliary supports may be used in cases where large furnaces are constructed, but in small furnaces, it is not necessary to provide auxiliary supports for supporting the arches.

In the drawings the walls 2 have been extended upwardly above the roof 20 to form auxiliary supports for the cross members 33, but if desired these extensions of the walls may be omitted.

It will also be understood that the buckstays may be connected to each other in the usual manner instead of by means of the members 33 which form supports for the longitudinal members 35.

I have shown, in the drawings, a plurality of longitudinally extending tiles 38 along the joints between the bottom tiles 17 of the muiilc. These tiles may be used for supporting the usual runway for the pans in which the articles to be annealed are placed, and also form seals for the joints between the tiles 17 as well as flues under the pans foli lpermltting a free circulation.

e front end of the mullie is provided with an inlet opening 39 through which the articles to be annealed are passed, while the rear end of the mufiie is in communication with the usual cooling extension 40 of a glass ani'iealing leer.

The advan'ta s of m invention result from the provision of a ass annealing furnace having a muflle wit 1in the combustion chamber, which is supported between the arches 1n the bottom of the combustion chamber and arches in the top of the combustion chamber. Another advantage of my invention results from the PIOVlSlOII of a compound arch for sup orting the roof of the muffle, together wit means for interlocking the roof tiles for the muille between said arches. Furthermore, from the provision of means for forming gas tight joints between the muiile and the combustion chamber, together with means for preheating the air and as by the heat from the bottom of the com ustion chamber before admitting the air and gas to the combustion chamber.

I claim:

1. A glass annealing furnace having a (OlllbllStlOll chamber, a plurality of upper arches therein, a plurality of lower arches then-in, nd a muffle supported on said arches, substantially as described.

2. A glass annealing furnace having a combustion chamber, a plurality of up )er arches therein. a plurality of lower arc es therein, a niufiie bottom and side walls supported on the lower arches, a roof for the mufile supported on the 11 per arches, and a roof for the combustion c iamber above the upper arches, substantially as described.

3. A glass annealing fftrnace having a combustion chamber, a p1 rality of up er arches therein, a plurality of low r a therein, a muffle bottom and side 'fialls sup ported on the lower arches, a roof for t 1e muflie supported on the upper arches, a roof for the combustion chamber above the upper 10o arches, and supporting rods for some of the upper arches, substantially as described.

-t. A glass annealing furnace having a combustion chamber, a plurality of arches therein, a muffle supported on said arches, 10b upwardly extending piers therein, a plurality of arches supported on said piers, and a roof for the muflie supported on the last mentioned arches, substantially as described.

5. A glass annealing furnace having a 110 combustion chamber, a plurality of arches in the lower portion of the combustion chamber, upwardly extending piers on each side of the combustion chamber, arches on said piers, a mufiie within the combustion cham- 115 Fer between the piers and the arches, substantially as described.

6. A glass annealing furnace having a combustion chamber, a muflle within said combustion chamber, a lurality of arches in 120 the lower portion of t e combustion chamber for sugfiporting the bottom and side walls ofthe mu e, a. plurality of compound arches in the top of the combustion chamber, a roof for the combustion chamber above said 126 arches, and a plurality of tiles forming the roof of the. muflle supported between the members of the compound arches, substantially as described.

7. A glass annealing furnace having a 18 re es main combustion chamber a, lurality of arches in the combustion cham cr, a muflle ported by said arches, there being a pluity of Y auxiliary combustion chambers. along the side walls and the top of the muffle, communicating with the main combustion chamber, arches for supporting the roof of the mfiflle, a flue in communication with all of said secondary combustion chambers and an ofitake flue in communication with the last mentioned flue,'substantially as described.

8. A lass annealing furnace havin a combustion chamber, 5 and air flues be ow said combustion cham r, means for admitting gas to the gas flue, means for admitting air to the air ues, ports leading from the gas a plurality of arches in the lower portion of the combustion chamber, a plurality of piers on each side of the combustion chem er, said piers being approximately in vertical alinej ment with the arches, a second set of arche supported on said piers, a roof above said arches, a longitudinal line above the roof communicating with the combustion chambers between the second set of arches, an ofi'take flue in connection with the last men tioned flue, and a mufile in the combustion chamber supported. between the arches and the piers substantially as described.

In testimony whereof, I have hereunto set my hand. i V

BENJAMIN FRANKLIN HOKTQN.

and air Hues t0 the combustionchamber,. 

